Rockwell Automation 20-COMM-D DeviceNet Adapter Series B FRN 2.xxx - Manual (Page 153)

Using Explicit Messaging 6-25
20-COMM-D DeviceNet Adapter User Manual
Publication 20COMM-UM002G-EN-P
Table 6.N Example Scattered Write Request Data
Figure 6.27 Example Scattered Write Request Data File
Address
Value
Description Hex. (1)
(1) In RSLogix 5 software, leading zeros are not displayed in data file addresses. For example, ‘0024’ in address
N30:1 is shown as ‘24’.
Dec.
N30:0 0101 257 TXID = 01, Command = 01 (execute)
N30:1 0024 36 Port = 00, Size = 36 bytes (3)
(3) The maximum number of bytes that can be entered is 120 (78 Hex.), which represents 19 parameters. The
number of required bytes always includes 2 for the Class, 2 for the Instance, 2 for the Attribute, 2 for each
parameter being written to, and 4 for each parameter value (2 bytes for the Least SIgnificant Word and 2 bytes
for the Most Significant Word). For this example where 5 parameters are being written to, a value of 36 bytes is
required.
N30:2 4C01 19457 Service = 4C (Set_Attribute_Single), Address = 01 (Node)
N30:3 0093 147 Class = 93 (DPI Parameter Object)
N30:4 0000 0 Instance = Class Attributes (drive)
N30:5 0000 0 Attribute = 0 (Parameter Value)
N30:6 008D 141 Parameter Number Written To = 141 [Accel Time 2]
N30:7 006F (2)
(2) For PowerFlex 700S or PowerFlex 750-Series drives, if some of the parameters being written to are floating
point (REAL) data types, see the ‘Communications’ section in Chapter 1 of the PowerFlex 700S AC Drives
Phase II Control Reference Manual, publication PFLEX-RM003, on how to manipulate REAL data into two 16-bit
registers.
111 Parameter Value Written (LSW) = 11.1 seconds
N30:8 0000 (2) 0 Parameter Value Written (MSW) = 0
N30:9 008F 143 Parameter Number Written To = 143 [Decel Time 2]
N30:10 00DE (2) 222 Parameter Value Written (LSW) = 22.2 seconds
N30:11 0000 (2) 0 Parameter Value Written (MSW) = 0
N30:12 0069 105 Parameter Number Written To = 105 [Preset Speed 5]
N30:13 014D (2) 333 Parameter Value Written (LSW) = 33.3 seconds
N30:14 0000 (2) 0 Parameter Value Written (MSW) = 0
N30:15 006A 106 Parameter Number Written To = 106 [Preset Speed 6]
N30:16 01BC (2) 444 Parameter Value Written (LSW) = 44.4 seconds
N30:17 0000 (2) 0 Parameter Value Written (MSW) = 0
N30:18 006B 107 Parameter Number Written To = 107 [Preset Speed 7]
N30:19 022B (2) 555 Parameter Value Written (LSW) = 55.5 seconds
N30:20 0000 (2) 0 Parameter Value Written (MSW) = 0